Made of chrome vanadium electric steel, forged, and oil-hardened, these hightech water pump pliers allow adjustment at the touch of a button directly on the workpiece. Fine adjustment for optimum adaptation to different sizes of workpieces and a comfortable handle with a non-slip plastic coating. Self-locks on to pipes and nuts so there's no slipping and low handforce is required. Guard prevents finger-pinching and the box-joint design gives high stability and a reliable grip. Includes three sets: 7" with a maximum jaw size of 1-1/2"/42mm on pipes and 36mm on nuts; 10" with a maximum jaw size of 2"/50mm on pipes and 46mm on nuts; and the 12" with a maximum jaw size of 2-3/4"/70mm on pipes and 60mm on nuts.